Re: standard size for smt tantalums?


"Michael Noone" <mnoone.uiuc.edu@xxxxxxxxx> wrote in message
news:Xns9689A2EA41978mnooneuiucedu127001@xxxxxxxxxxxxxxxxx
> Hi - I was just wondering - I've noticed that there are very few tantalums
> made in the standard discrete surface mount sizes (1206, 0805, etc.). I
> was
> able to find a very limited selection of such capacitors made by TAC (for
> example, Digi-Key part # 478-2562-1-ND). But these are expensive (over $2
> each for an 0805 in quantites of 100, compared to $.50 for similarly
> specced tantalums in different packages). So my question is this: Are
> there
> standard sizes for tantalums? Or does each manufacturer have their own
> sizes?

I don't have the specs handy, but I suspect the largest size tantalum that
would fit in a 1206 package would be around 1 ufd at 10V.
>
> As long as I'm on the topic of tantalums - can somebody tell me why they
> are reccomended for power smoothing? Would a ceramic work just as well?
> (as
> they're cheaper and available in sizes I'm more used to)

Check the price on a 1 ufd ceramic; and where would you buy one that is 100
ufd?

Tam
>
> Thanks,
>
> M. Noone


.

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